Some more Google+ experiments that are rolling out as we speak:
You can now + reply anyone who commented on your post regardless of whether they have "find me in search" enabled. Hey, if they wrote to you, seems to make sense that you should be able to write back, right?
We removed the "blocked circle" and added a new menu for managing your blocked people.
We added a new invite dialog that provides a URL you can give out to your friends so they can join. I know, Vic already posted this one. Just re-posting in case you missed Vic's post.
For technical reasons, the little black bar across the top of the page, and the rest of the page, used a different event system. Now they don't, which means that if you add a friend from the notification bar on the top of the page, they will immediately show up as a friend on the bottom of the page. I know, crazy.
Fixed the count for # of followers. The number used to be capped at 10,000 in the people editor (even if you had more), now it is accurate. Also, we used different algorithms for calculating your followers in profiles vs. the list on your circles. We now use the same algorithm for both so they should always match.
My team just got a list from our consumer operations group of over 25,000 suggestions of great stuff we should be working on. Almost 6,000 of those were about the #s not matching in profiles and the circle editor (fixed!). A couple hundred were questions about whether sharing to your circles included your block circle (fixed!). Needless to say, much of what we do is based on what you guys ask for. We even had a few people tell us it was just cruel to show photos of their X's in their block circle, so, we removed photos for people you've blocked =)
Now, off to go address a few more of the issues. Stay tuned, lots of great stuff coming.